| Rank | Precipitation | Date |
|---|---|---|
| 1 | 11.1 cm | July 3, 1952 |
| 2 | 7.8 cm | July 25, 2004 |
| 3 | 7.0 cm | August 7, 1967 |
| 4 | 6.0 cm | May 27, 1960 |
| 5 | 5.9 cm | July 26, 1996 |
| 6 | 5.0 cm | June 19, 2006 |
| 7 | 4.9 cm | August 18, 2000 |
| 8 | 4.9 cm | July 14, 1959 |
| 9 | 4.8 cm | July 13, 1967 |
| 10 | 4.8 cm | September 3, 1946 |
| 11 | 4.7 cm | June 11, 1974 |
| 12 | 4.7 cm | July 29, 1984 |
| 13 | 4.7 cm | July 26, 1947 |
| 14 | 4.6 cm | July 12, 2007 |
| 15 | 4.6 cm | August 27, 1990 |
| 16 | 4.6 cm | June 18, 1977 |
| 17 | 4.6 cm | May 21, 1989 |
| 18 | 4.6 cm | June 20, 1959 |
| 19 | 4.5 cm | July 5, 1972 |
| 20 | 4.4 cm | July 17, 1978 |